I have downloaded the appropriate driver to set up my scanner, as advised by Canon. However when I attempt to use it I get a message saying that Photoshop cannot recognise the application, or words to that effect. Can you help?
Thank you, Diana
If you downloaded the installer from Canon. then you have a file that ends in the extension .sit ?
You will need to also download and install the Stuffit Expander from this link.
http://www.versiontracker.com/dyn/moreinfo/macosx/182
Then you will be able to install the Canon driver.
Keep in mind that you may not get that old driver to work with your iMac - because of the Intel processor. You will likely find out that the driver needs to be updated to a Universal/Intel version.
If you can't get the Canon software to work, here's a possible alternate
http://www.versiontracker.com/dyn/moreinfo/macosx/7610